Moving up the ladder?

[ComradeBrendan]

How does one (if at all) move up the ladder in terms of job prospects as a support contractor?

My impression of the general atmosphere (at least under Raytheon; perhaps things have changed) is that people tend to rotate through different jobs with a fair bit of frequency.

Is "ice time" a deciding factor in each successive application one hands in? Can someone cross train for a more difficult job while in McMurdo?